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If 40 N force, parallel to the incline and directed up the incline, is exerted to a crate on a frictionless incline which is 30 degrees over the horizontal, the acceleration of the crate is around 2
As an electron in a 1-dimensional box having length 0.600 nm jumps among two energy levels, a photon of energy 8.36 eV is emitted. Find out the quantum numbers of the two levels?
An interstellar probe is sent to the star Vega that is 25.3 light years away. It travels most of the distance at a speed of around 0.960 c, as calculated from the Earth.
The allowed energies of the quantum system are 1.0 eV, 2.0 eV, 4.0 eV and 7.0 eV. Determine the wavelengths which appear in the system's emission spectrum? (Answer must be in nanometers)
A closed organ pipe is open at one end and closed at the other end. Determine its basic and first overtone frequencies, if the temperature is around 18 C? The length of the pipe is around 35 cm? De
An electron confined in a 1-dimensional box is viewed, at different times, to encompass energies of 12 eV, 27 eV and 48 eV. Determine the minimal length of the box in nanometers?
X rays diffract from the crystal in which the spacing among atomic planes is around 0.171 nm. The second-order diffraction takes place at 41.0 degrees. Determine the angle of the first-order diffrac
Such a star could be thought of as a huge atomic nucleus. When a star of mass of around 1.4 x 1.99 x 10^30 kg collapsed into neutrons (mn = 1.67 x 10^-27 kg), determine what would its radius be? (Su
By using 2.30 x 10^17 kg/m3 as the density of nuclear matter, determine the radius of a sphere of such matter which would encompass a mass equivalent to that of Earth. Earth consists of a mass equiv
A 32 N force, parallel to the incline, is needed to push a certain crate at constant velocity up a frictionless incline which is 30 degrees over the horizontal. Determine the mass of crate?
Compute the amount of mechanical work essential to lift a 120 kg barbell 2.00m (iv) He drops the barbell to the floor and lifts it continually.
The electric field within a 30 cm long copper wire is around 0.010 V/m. Determine the potential difference among the ends of the wire? Determine the current in the wire? The diameter of the wire is
A car having mass 1.20 x 103 kg is primarily moving on a level road at a speed of 22.0 m/s. Calculate the raise in temperature of the brakes, supposing that all the mechanical energy ends up as int
A crate of 11 kg is pulled through a force 150N (parallel to the incline) up a rough 35 deg incline. The crate consists of an initial speed 1.65 m/s. The crate is pulled a distance of around 8.21 m
A satellite functions at an altitude of around 19,700 km and employs communication frequencies of 1609.58 MHz. Determine the gravitational frequency change with respect to the Earth.
At what average rate would heat have to be eliminated from 1.5 L of water to decrease the liquid's temperature from 20 deg C to its freezing point in around 3 minutes?
The two diffraction gratings, A and B, are positioned at the similar distance from the observation screens. Light with the same wavelength is employed for each.
A centripetal acceleration addict rides in the uniform circular motion having period T = 4.30 s and radius r = 3.00 m. At one moment his acceleration is a = (5.00 m/s2) + (-4.00 m/s2). At that insta
Determine the speed of the blood in the aorta? Suppose that the speed of sound in human body is around 1540.
Determine what fraction of h is the maximum height to which the puck will mount back up the slope? Enter zero (0) when the first puck doesn’t go back up the slope.
In a game of pool the cue ball, with incoming speed vo, collides elastically with he eight ball, which is at rest. When the outgoing speed of the cue ball is around 4vo/5, determine the angle among
On a lark, a discus champion throws a circular metal plate having velocity of 19.9 m/s at an angle of 45 degrees to the horizontal. The plate is rotating in the vertical plane at a rate of around 21
As well, suppose that diffraction effects, instead of atmospheric turbulence, limit the resolving power of the telescope. Determine the maximum distance which these stars could be from the earth.
The light shining on the diffraction grating consists of a wavelength of 476 nm (in vacuum). The grating generates a second-order bright fringe whose position is defined by an angle of 9.45°. De
The thickness of the film is around 254 nm and is the minimum nonzero thickness for which constructive interference can take place. Determine the refractive index of the film?